The Associated Press reports an autopsy conducted on deceased Denver Broncos RB Damien Nash found no sign of drugs or unnatural substances in his system. An exact cause of his death could not be determined, the St. Louis County medical examiner's office said Tuesday, May 8.

Bill Williamson, of the Denver Post, reports a preliminary autopsy on Denver Broncos deceased RB Damien Nash was inconclusive, according to Nash's agent, David Canter. Toxicology results will likely take weeks, while a forensic pathologist who specializes in hearts is expected to examine Nash's. Nash did experience some minor weight issues while as a member of the Tennessee Titans. Nash, however, had no weight issues with the Broncos.